Log Message:
Update mail/clamav to 0.72 and enable pkgviews installation.

Changes:

0.72
----

Major bugfixes in this release include crashes with corrupted BinHex messages
and some Excel documents. Protection against archive bombs (not fully
functional since 0.70) was improved and a number of other improvements were
made.

0.71
----

This release fixes all bugs found in 0.70 and introduces a few new features -
the noteworthy changes include:

-) libclamav:
    + support nested OLE2 files
    + support Word6 macro code
    + ignore popular file types (media, graphics)
    + support compress.exe (SZDD) compression (test/test.msc)
    + improve virus detection in e-mails

-) clamscan:
    + automatically decide (by comparing daily.cvd version numbers) which
      database directory (hardcoded or clamav.conf's one) to use
    + support compression ratio feature (--max-ratio)
    + allow regular expressions in --[in|ex]clude
    + do not overwrite old files in a quarantine directory but add a numerical
      extension to new files
    + respect --tempdir in libclamav
    + fix access problem when calling external unpackers in a superuser mode
    + fix file permission corruption with --deb in a superuser mode

-) clamd
    + support log facility specification in syslog's style (LogFacility)
    + new directive LeaveTemporaryFiles (Debug no longer leaves temporary
      files not removed)

-) clamav-milter:
    + include the virus name in the 550 rejection
    + support user defined template for virus notifications (--template-file)
    + sort quarantine messages by date
    + improve thread management
    + add X-Virus-Scanned and X-Infected-Received-From: headers
    + improve load balancing (when using remote servers with --server)
    + send 554 after DATA received, not 550
    + save PID (--pidfile)

-) documentation:
    + German clamdoc.pdf translation (Rupert Roesler-Schmidt and Karina
      Schwarz, uplink coherent solutions, http://www.uplink.at)
    + new Japanese documentation (Masaki Ogawa)